Shearing blade fob sheep sheaks ahd



Oct. 25,1927. H C. WRIGHT ET AL 1,646, 70

SHEARING-BLADEFOR SHEEP SHEARS AND THE; LIKE Filed Oct. 24. 1925 iibface 7 a rave/as rzs aw:

Ansrnama, assrcnons TO CHICAGO OF ILLINOIS. i

application filed. October 24, 1925;

and like implements. It consists in theelek ments and feature-of construction shown and described as indicated in the claim. In the drawings Figure 1 is a plan view of a co-operating comb and cutter of sheep shear constructed according to this invention. v V

Figure 2 is a view on an enlarged scale of the vibrating cutter, with asingle tooth ofthe comb shown in dotted line in cooperating position with respect to onetooth of the cutter.

consecutive teeth or fingers of the comb.

Figure 4 is a section at the line H on Figure 2. I I

Figure 5 is an obverse or under slde plan view of a single tooth of the cutter shown in Figure 2.

Figure 6 is Figure 4. c

Figure 7 is a section at the line 7-7 on Figure 2.

v Figure 8 is Figure 3.

a sectionat the line 8 8 on L The teeth of the cutter shown in the drawings, and preferably also the teeth. or

fingers of the comb, are. serrated at their shearing edges. The characteristic of the invention consists in the form of these serrations whichmay be best understood as seen in the cutter, A, each of whose teeth,

' A .is in generalapproximately triangular in cross section, the opposite sloping upper sides, aa, making acute angles with the the sloping shearing face, M. The serration grooves, a, are acute angled and formed extending in sidesof the cutter teeth substant-ially parallel to each other, ward, i. e., in the. direction from point to heel of the too-th,as they extend downward along the sloping sides of the teeth, with the result that they intersect the shearing face of the tooth in acute angles which open rearward, thatis, with the teeth of the serrations pointing rearward,as seen at a. l

' The fingers, B of thecomb, B, are similarly formed to the extent, at least, that they have acute angled teeth, 6, formed by acute angled serration grooves in the back or under etrace 'o. wiuemiaanreaec se G. .BRrsrow,"

Figure 3 is an enlarged plan viewof two a section the line 6 -6 on trending rear- SHEARi-NGBLADEFQR s'HEEr? SHEARS Alanine LIKE. r i

.r J m. Serial No. 64,500.

i side of the teeth, which a le I on sYnigrnpafnnw som WALES, I LEXIBLEHSHAF'I' COMPANY, A CORPORATION" length, trend backwardfromthe point to base of the comb tooth or finger, so that the little serration teeth, I), pointrearward,

and the angles of the serration grooves or notches open rearward as seen at 6 on Fig.-

ure 3.

The purpose and result of-making the serrations in the. form described is that the hairs or fibers of the pelt subjectedito shearing by theshear thus constructed, when en-- countered by the shearing edge oft-he vibrat no I mg cutter, if notsevered at thefirst touch of i the cutter or bythe draw-cut immediately following, tend to slide along the long slopev of the serration which"encountersthem toward and into the acute angle of the serra- V tron, with certainty of being severed. when they reach the angle, if not severed by the first encounter or the draw-out.

YVhen the comb teeth are similarly formed, as shown 1n the drawings, thesamesort of sliding of the fiberalong the long slope of the serration tooth occurs when the edge of the'fi-nger encounters "the fiber as is advanced into the standing wool; and the fiber, if not severed'bythe draw-cut action,

angle. of.

is eventually stopped in the acute the serrations where it cannot escape-severance.

Preferably, the serrations and the comb are relatively staggered as seen in Figure 2, so that in the stroke of the cutter tooth past the comb tooth 'or finger, the .serration teeth of the cutter cross the long slope of the serration of the comb length of said finger about midway in the long slope. The advantage ofthus relating the serrations of the two co-operatingshear 'members is obvious, viz, that no fiber can slide more than half the length of thelong slope of the serration tooth of cutter or the comb,

of the cutter' comb before beingstopped in the acute angle of one or the other.

We claim: V Q A shear memberv for sheep shears and the like having-shear teeth tapered widening rearwardly, and havingi'n the rearwardly' a dlverglng sides angular SerratiOns'intersecting the shearing face and rendering the cutting edges of the planes of the forward tions being at rearwardly-pointing acute shear teeth toothed, the surfaces of said serra:

ios

anglesto said rearwardly diverging sides of;

lithe shear teeth, the teeth produced by said draw out along said slopes of the serrations Iserrations of the co-operating shear teeth of and are driven into an angle of the serraii the cutter and comb respectively being relations of one or the other of said co-operating tiyely staggered for alternating from front shear members after exposure to the draw '5 to rear along the length of said cutter and cut for not more thanhalf he length of said comb, teeth to cause the points of the serraslopes. I j tion teeth of each of said shearing" members In testimony whereof, we have hereunto to cross the outwardly-facing slopes of the set our hands at Chicago, Illinois, this 19th 20 serration teethot the other member interday of October, 1925. mediate the length of said slopes; whereby fibers encountered and engaged between the FRANCISS vGr. BRISTOW. cutter and comb teeth are exposed to the HORACE C. WRIGHT. 

